I haven't use the 108" much because I don't find colors that I like. I have not noticed them being thinner. Just the opposite. They are usually very stiff. Some of our quilt shops carry fat backs. JoAnn have some. Be care at JoAnn because a lot of times the fabric shiffs as it is rolled on the bolt and they cut exactly on the measurement. By the time you square up the two ends you are short. I am using a longarm and need to square things up.